CVE-2017-7831: Infoleak
First published: Tue Nov 14 2017(Updated: )
A vulnerability where the security wrapper does not deny access to some exposed properties using the deprecated "_exposedProps_" mechanism on proxy objects. These properties should be explicitly unavailable to proxy objects. This vulnerability affects Firefox < 57.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox | <57 | 57 |
| Mozilla Firefox | <=56.0.2 | |
| debian/firefox | 131.0.2-2 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1392026
- https://www.mozilla.org/security/advisories/mfsa2017-24/
- http://www.securityfocus.com/bid/101832
- http://www.securitytracker.com/id/1039803
- https://launchpad.net/bugs/cve/CVE-2017-7831
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7840
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7831
- https://nvd.nist.gov/vuln/detail/CVE-2017-7831
- https://security-tracker.debian.org/tracker/CVE-2017-7831
- https://ubuntu.com/security/CVE-2017-7831
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7831
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2017-7831?
CVE-2017-7831 is a vulnerability in Firefox versions before 57 where the security wrapper does not deny access to some exposed properties on proxy objects.
How does CVE-2017-7831 affect Firefox?
CVE-2017-7831 affects Firefox versions before 57.
What is the severity of CVE-2017-7831?
The severity of CVE-2017-7831 is medium with a CVSS score of 5.3.
How can I fix CVE-2017-7831?
To fix CVE-2017-7831, update Firefox to version 57 or later.
Where can I find more information about CVE-2017-7831?
You can find more information about CVE-2017-7831 at the following references: [1] [2] [3].
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- vendor/mozilla
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- version/mozilla firefox/56.0.2
- package-manager/debian